signal-to-cut-off ratio

signal-to-cut-off ratio

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S/co.

A laboratory comparison of some measurable feature of a specimen to the standard set by the laboratory's positive control For example, in tests for antibodies to hepatitis C antibody, hepatitis C infection is not diagnosed unless a specific S/co is exceeded. Results that fall below the S/co can be found in noninfected patients and are considered to be false positive.
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